<template>
  <el-form
    ref="postForm"
    :model="postForm"
    :rules="rules"
    class="form-container"
  >
    <sticky :class-name="'sub-navbar'">
      <el-button v-if="!isEdit" @click="showGuide">显示帮助</el-button>
      <el-button
        v-loading="loading"
        type="success"
        style="margin-left: 10px"
        @click="submitForm"
      >
        {{ isEdit ? "编辑电子书" : "新增电子书" }}
      </el-button>
    </sticky>
    <div class="detail-container">
      <el-row :span="24">
        <warning></warning>
        <el-col :span="24">
          <ebook-upload
            :file-list="fileList"
            :disable="isEdit"
            @onSuccess="onUploadSuccess"
            @onRemove="onUploadRemove"
          />
        </el-col>
        <el-col :span="24">
          <el-form-item prop="title">
            <MDInput v-model="postForm.title" :maxlength="100" name="name"
              >书名</MDInput
            >
          </el-form-item>
          <el-row>
            <el-col :span="12">
              <el-form-item
                prop="author"
                label="作者:"
                :label-width="labelWidth"
              >
                <el-input
                  v-model="postForm.author"
                  placeholder="作者"
                ></el-input>
              </el-form-item>
            </el-col>
            <el-col :span="12">
              <el-form-item
                prop="publisher"
                label="出版社:"
                :label-width="labelWidth"
              >
                <el-input
                  v-model="postForm.publisher"
                  placeholder="出版社"
                ></el-input>
              </el-form-item>
            </el-col>
          </el-row>

          <el-row>
            <el-col :span="12">
              <el-form-item
                prop="language"
                label="语言:"
                :label-width="labelWidth"
              >
                <el-input
                  v-model="postForm.language"
                  placeholder="语言"
                ></el-input>
              </el-form-item>
            </el-col>
            <el-col :span="12">
              <el-form-item prop="rootFile" label="根文件:" :label-width="labelWidth">
                <el-input
                  v-model="postForm.rootFile"
                  placeholder="根文件"
                  disabled
                ></el-input>
              </el-form-item>
            </el-col>
          </el-row>

          <el-row>
            <el-col :span="12">
              <el-form-item prop="filePath" label="文件路径:" :label-width="labelWidth">
                <el-input
                  v-model="postForm.filePath"
                  placeholder="文件路径"
                  disabled
                ></el-input>
              </el-form-item>
            </el-col>
            <el-col :span="12">
              <el-form-item prop="unzipPath" label="解压路径:" :label-width="labelWidth">
                <el-input
                  v-model="postForm.unzipPath"
                  placeholder="解压路径"
                  disabled
                ></el-input>
              </el-form-item>
            </el-col>
          </el-row>

          <el-row>
            <el-col :span="12">
              <el-form-item prop="coverPath" label="封面路径:" :label-width="labelWidth">
                <el-input
                  v-model="postForm.coverPath"
                  placeholder="封面路径"
                  disabled
                ></el-input>
              </el-form-item>
            </el-col>
            <el-col :span="12">
              <el-form-item prop="originalName" label="文件名称:" :label-width="labelWidth">
                <el-input
                  v-model="postForm.originalName"
                  placeholder="文件名称"
                  disabled
                ></el-input>
              </el-form-item>
            </el-col>
          </el-row>

          <el-row>
            <el-col :span="24">
              <el-form-item prop="cover" label="封面:" :label-width="labelWidth">
                <a v-if="postForm.cover" :href="postForm.cover" target="_blank">
                  <img :src="postForm.cover" class="preview-img" />
                </a>
                <span v-else>无</span>
              </el-form-item>
            </el-col>
          </el-row>

          <el-row>
            <el-col :span="24">
              <el-form-item :label-width="labelWidth" label="目录：">
                <div
                  v-if="contentsTree && contentsTree.length > 0"
                  class="contents-wrapper"
                >
                  <el-tree :data="contentsTree" @node-click="onContentClick" />
                </div>
                <span v-else>无</span>
              </el-form-item>
            </el-col>
          </el-row>
        </el-col>
      </el-row>
    </div>
  </el-form>
</template>

<script>
import Sticky from "../../../components/Sticky";
import Warning from "./Warning.vue";
import EbookUpload from "../../../components/EbookUpload";
import MDInput from "../../../components/MDinput";
import { createBook, getBook, updateBook } from '../../../api/book'
/* 
const defaultForm = {
  title: "", // 书名
  author: "", // 作者
  publisher: "", // 出版社
  language: "", // 语种
  rootFile: "", // 根文件路径
  cover: "", // 封面图片URL
  coverPath: "", // 封面图片路径
  fileName: "", // 文件名
  originalName: "", // 文件原始名称
  filePath: "", // 文件所在路径
  unzipPath: "", // 解压文件所在路径
  contents: [], // 目录
}; */

const fields = {
  title: "书名",
  author: "作者",
  publisher: "出版社",
  language: "语言",
};

export default {
  components: {
    Sticky,
    Warning,
    EbookUpload,
    MDInput,
  },

  props: {
    isEdit: Boolean,
  },
  data() {
    const validateRequire = (rule, value, callback) => {
      if (value.length === 0) {
        callback(new Error(fields[rule.field] + "必须填写"));
      } else {
        callback();
      }
    };
    return {
      loading: false,
      postForm: {},
      fileList: [],
      labelWidth: "120px",
      contentsTree: [],
      rules: {
        title: [{ validator: validateRequire }],
        author: [{ validator: validateRequire }],
        language: [{ validator: validateRequire }],
        publisher: [{ validator: validateRequire }],
      },
    };
  },
  created() {
    if (this.isEdit) {
      const fileName = this.$route.params.fileName
      this.getBookData(fileName)
    }
  },
  methods: {
    getBookData(fileName){
      getBook(fileName).then(response => {
        this.setData(response.data)
      })
    },
    setDefault() {
      // this.postForm = Object.assign({}, defaultForm);
      this.contentsTree = [];
      this.fileList = []
      this.$refs.postForm.resetFields()
    },
    setData(data) {
      const {
        title,
        author,
        publisher,
        language,
        rootFile,
        cover,
        originalName,
        url,
        contents,
        contentsTree,
        fileName,
        coverPath,
        filePath,
        unzipPath,
      } = data;
      this.postForm = {
        ...this.postForm,
        title,
        author,
        publisher,
        language,
        rootFile,
        cover,
        url,
        originalName,
        contents,
        contentsTree,
        fileName,
        coverPath,
        filePath,
        unzipPath,
      };
      this.contentsTree = contentsTree;
      this.fileList = [{ name: originalName, url}]
    },
    onUploadSuccess(data) {
      this.setData(data);
      console.log("onUploadSuccess", data);
    },
    onUploadRemove() {
      console.log("移除书籍清空数据");
      this.setDefault();
    },
    showGuide() {
      console.log("显示帮助！");
    },
    submitForm() {
      if (!this.loading) {
        this.loading = true;
        this.$refs.postForm.validate((valid, fields) => {
          console.log(valid);
          if (valid) {
            const book = Object.assign({}, this.postForm);
            delete book.contentsTree
            if (!this.isEdit) {
              // 新增电子书
              createBook(book).then( response => {
                console.log(response);
                const { msg } = response
                this.$notify({
                  title: '操作成功',
                  message: msg,
                  type: 'success',
                  duration: 2000
                })
                this.loading = false
                this.setDefault()
              }).catch(()=>{
                this.loading = false
              })
            } else {
              // 更新电子书
              updateBook(book).then(response => {
                console.log(response);
                const { msg } = response
                this.$notify({
                  title: '操作成功',
                  message: msg,
                  type: 'success',
                  duration: 2000
                })
                this.loading = false
              }).catch(()=> {
                this.loading = false
              })
            }
          } else {
            const message = fields[Object.keys(fields)[0]][0].message;
            this.$message({
              message,
              type: "error",
            });
            this.loading = false;
          }
        });
      }
    },
    onContentClick(data) {
      if (data.text) {
        window.open(data.text);
      }
    },
  },
};
</script>

<style lang="scss" scoped>
.detail-container {
  padding: 40px 50px 20px;
  .preview-img {
    width: 200px;
    height: 270px;
  }
}
</style>